Cataracts usually form slowly and cause few symptoms until they noticeably block light. Symptoms can include:
• Vision that is cloudy, blurry, foggy, or filmy
• Progressive nearsightedness in older people often called "second sight" because although their distance vision is getting worse, they may no longer need reading glasses
• Changes in the way you see color
• Problems driving at night such as glare from oncoming headlights
• Problems with glare during the day
• Double vision
• Sudden changes in your glasses prescription